LC Com Port issue - Unknown Device (Code 43)

Nanobot

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edit Unknown Device (Code 45)

I notice I used a different configuration of USB connections while programing the LC.

After disconnecting some USB items and trying to load a new program I found that the Arduino software used the reference port number to the original program load. com 7 - now i have no com ports in use on my device manager so the Arduino would normally look to com3 it still uses com 7.

in research I found this in the 49-teensy.rules

# If using USB Serial you get a new device each time (Ubuntu 9.10)
# eg: /dev/ttyACM0, ttyACM1, ttyACM2, ttyACM3, ttyACM4, etc
# apt-get remove --purge modemmanager (reboot may be necessary)

is there a way to purge Arduino of old references?
 
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